Concrete dumping device



Oct. 20, 1953 F. KNOWLTON CONCRETE DUMPING DEVICE Filed May 1, 1952 2 Sheets-Sheet 1 I Fl'g/ 66 Fig.2-

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1953 F. KNOWLTON CONCRETE DUMPiNG DEVICE 2 Sheets-Sheet 2 Filed May 1,. 1952 Fred Know/ fana l I l l I l I II.III 4 I ..7L

INVENTOR.

Attorneys Patented Oct. 20, 1953 UNITED STATES E ATEN OFFICE CONCRETE DUMPING DEVICE Fred Knowlton, Oxford, Kans. Application May 1, 1952, Serial No. 285,365

6 Claims. I

' This invention relates in general to dumping mechanisms, and more specifically to a dumping device adapted to be secured to the rear of tractors for mixing and dumping concrete.

The primary object of this invention is to provide an improved supporting and dumping mechanism for a mixing barrel in a concrete mixer whereby the same may be conveniently carried at the rear of a tractor and tilted from a mixing position to a dumping position with a minimum of labor.

Another object of this invention is to provide an improved dumping mechanism for a concrete mixer mounted on the rear of a tractor, said dumpingmechanism being actuated by the hydraulic lift arms of the tractor.

Another object of this invention is to provide an improved concrete mixing attachment for tractors, said concrete mixer attachment including a mixing barrel mounted on the rear of a tractor and hydraulic means for rotating the same conveniently connected to a power take-oil of the tractor.

Another object of this invention is to provide an improved dumping mechanism for a concrete mixing barrel mounted on the rear of a tractor, said dumping mechanism being of such a nature whereby the driver of the tractor can easily dump concrete from the mixing barrel while seated on the tractor.

Another object of this invention is to provide an improved dumping mechanism for a concrete mixer mounted on the rear of a conventional farm tractor, said dumping mechanism being of such nature whereby the mixing barrel can be dumped in close place inasmuch as it is mounted on the rear of the tractor and extends rearwardly therefrom.

Another object of this invention is to provide an improved mounting and dumping mechanism for a mixing barrel whereby the same may be mounted on a conventional farm tractor, said mounting and dumping mechanism being of a simple and compact construction whereby it may be economically manufactured.

A further object of this invention is to provide an improved supporting and dumping mechanism for a mixing barrel which may be quickly attached to and removed from a conventional farm tractor, said mixing barrel being operated by drive mechanism of the tractor.

With these objects definitely in view, this invention resides in certain novel features of construction, combination and arrangement of elements and portions as will be hereinafter described in detail in the specification, particularly pointed out in the appended claims, and illustrated in the accompanying drawings which form a material part of this application and in which:

Figure l is a side elevational view of the rear portion of a conventional farm tractor having mounted thereon the cement mixer attachment, which is the subject of this invention, the cement mixer being illustrated in its mixing position, one of the rear wheels of the tractor and its associated wheel guard being omitted in order to clearly show the support and dumping mechanism of the concrete mixer;

Figure 2 is a side elevational view similarto that of Figure 1 and shows the mixing barrel of the concrete mixer in a dumping position;

Figure 3 is a top plan view of the tractor of Figure 1 and shows the mixing barrel in a dumping position similar to that of Figure 2, the view showing the arrangements of the various elements of the supporting and dumping mechanism of the concrete mixer;

Figure 4 is an enlarged fragmentary longitudinal vertical sectional view taken substantially upon the plane indicated by the section line '4-4 on Figure 3 and shows the construction of the mixing barrel and the manner in which it is mounted in a mixing barrel cradle; and

Figure 5 is a transverse vertical sectional view taken substantially upon the plane indicated by the section line 5-5 on Figure 1 and shows the manner in which the mixing barrel is supported by its associated mixing barrel cradle adjacent r the discharge end thereof.

Similar characters of reference designate similar or identical elements and portions throughout the specification and throughout the different views of the drawings.

Referring now to the drawings in detail, it will be seen that there is illustrated a rear portion of a conventional farm tractor, which is referred to in general by the reference numeral ID. A farm tractor It includes a frame l2 which is provided at its rear end with a differential M which has extending outwardly therefrom axle housing I6. Disposed within the axle housing I6 are conventional axles on which are mounted rear wheels l8, the rear wheels [8 being provided with wheel guards 20 on the inner side thereof, said wheel guards 20 being carried by their respective axle housings I6. Carried by the rear of the frame 12 adjacent the differential I 4 is a hydraulic lift mechanism 22 which in- 3 cludes a pair of rearwardly extending lift arms 24.

Mounted on the housing 12 adjacent the hydraulic lift mechanism 22 is a conventional seat 26. Carried by the frame I2 adjacent the seat 26 is control mechanism 28 for actuating the hydraulic lift mechanism 22. It will be understood that the control mechanism 28 may be actuated by a tractor operator seated in the seat 26.

Carried by the rear of the tractor I is a. concrete mixer attachment, which is referred to in general by the reference numeral 30 and it is adapted to be driven by mechanism of the tractor II). It would seem that the concretemixer; at, tachment 30 includes a mixing barrel 32 which is mounted within a mixing barrel cradle, which is referred to in general by reference numeral 34, for rotation. The mixing barrel cradle 34 is pivotally supported by a frame, which is referred to in general by the reference numeral 36 extending, rearwardly from the rear portion of the tractor ill. Extending between the barrel cradle 34 and the rear portion of the tractor i a tilting mechanism, which referred to in general by the reference numeral 38.

The frame 33 includes a pair of spaced parallel \t-sloaped frame elements disposed on each side of the mixin barrel cradl M Eac o the veshaped frame elements includes a first leg to which is connected at its forward end to its associated wheel guard and extends downwardly and rearwardly therefrom. The other leg 42; is c nnected, by elamp means 44 to the axle housing IS in spaced relation to the adjacent wheel guard .23 and extends upwardly and rearwardlytherefrom where it is connected .to the rear end of the leg 40.

Y The mixing barrel cradle 34 includes a longitudinally extending cradle portion .43 .and a transversely extending cradle portion All, the cradle portions .46 and 48. being at rig-ht angles to :each other and rigidly connected. The lon- V Themixing barrel 32 is of the general shap of conventional concrete mixingbarrelsand includes a cylindrical body portion 38 which terminates at its forward end in a bottom 50 and at its rear end in .a discharge opening 52. .-Se cured to the bottom fill and concentric with the longitudinal axis of the mixing barrel 32 is a wheel .64 on which is mounted, a conventional tire .66. The wheel v64 is connected to the bottom Bl! of the mixing barrel by a plurality of fasteners 68 and the connection is reinforced by apair of plates 10 and '12, the plate 10 being disposed within-the mixing barrel andthe plate 12 being disposed forwardly thereof.

Extending "forwardly from the plate 12 being provided with a forwardly extending center shaft 14 which ismounted within a bearing .16 carried .by the base 52 of the mixing barrel cradle .34. it will be understood that the center shaft PM supports the forward portion of the. mixing barrel 32 and forms an axis about which the mixing barrel rotates.

Referring now to Figure 5 in particular, it is seen that extending diagonally between the legs 54 and the horizontal member 56 adjacent therein to sections are support members 18 which are mounted both forwardly and rearwardly of the legs and horizontal member. Extending longitudinally between each pair of support members 18 s a shaft on which is. mounted for rotation a roller 82. It will be noted that the rollers 82 underlie the cylindrical body portion 58 of the mixing barrel 32 adjacent its discharge end 62 and supports the rear end thereof.

The legs 54 of the mixing barrel cradle 34 are pivotally connected at the rear ends of the frame elements of the supporting frame 36 by pivot pins 84 by which the mixing barrel 32 and its associated-cr-adle 34 tilt. It will be understood that the complete Weight of the mixing barrel 32 and its cradle 34 are on and supported by the pivot pi s .84.

The tilting mechanism 38 includes a first link 86 which is connected at its upper end to one .of the es 0 i rmediat its nds by a p vot P 88. The lower end of the first linkdfi is pivotally connected to the rear end of a second link 90 by a pivot pin 92. The sec nd l nk 90 e t nds o wardly and is connected to its respective axl housing 16 for pivotalmovement with respect thereto. Pivotally connected to the rear end of o e Of t i t arms 249 the hydraulic lift mechanlsm 22 0f the t c or 10 isan a tuat ng arm M T actuating r ext nds downwardly n r a y nd i connected at its lower end to the Second k intermediatethe ends. there of by pivot pinfifi.

I wil e understo d hat he iltin mechanism 33 includes similar links .85 and .95 and an actuating arm 4 on the pposite side .of the m s barrel cra e :34. and that the two setsof l f a c nnec ed together y th pivot pin .92 which extends transversely therebetween. As is best illustrated in, Figure 1, when the mixing barrel #2 is in its mixing position the lift arms 4 e m su ant ally horizontal p sitions. and th ire .66 is in nga ement. with a roller 98 card by a p wr take-0.1T J90 extending from. the rear portion of the ifier ntial 1.4. When. it is desired to dump material disposed within the m xing barrel 32, the lift arms '34 are rotated clockwise towards the from; of the. tractor ill by manipulating the control mechanism 2-8. The cl kwlse rotation of the lift arms 124result in th now-and movement of the pivot pins 96 and the-strai htening.outof the .linlrstfi and iii) with he r ult that the pivot p ns 188 are urged uowardly and rearwardly and the mixing barrel cradle 34 is tilted about the piyot pins 184..

Inasmuch as the mixing barrel 32 is mounted at the extreme rear of the tractor :10 it will be seen that the tractor-.l:8- .may be backed into a corner and concrete dumped from the mixing barrel 3.2 in any tight place. Inasmuch as the dumping operation :may be performed with the operator seatedon the seat 26, it is obvious that no clearance behind the mixing barre132 is neceszforthe operator doing a dumping operation.

While the mixing barrel .32 has been described for the sole purposeof mixing concrete, it will be understood that it :is not. intended .to so limit e ntlo as the mixin barrel may also be utlllzed il -mix transr e t nger-dumn n steek feed-silage, dirt, water pr manure,

.The operation of this device .wil b ir r -t from the foregoing description of the details thereof, taken in connection with the above recited objects and the drawings. Further description would appear to be unnecessary.

Minor modifications of the device, varying in minor details from the embodiment of the device illustrated and described here, may be resorted to without departure from the spirit and scope of this invention, as defined in the appended claims.

Having described the invention, what is claimed as new is:

1. A concrete mixer attachment for tractors, said concrete mixer attachment comprising a mixing barrel, a mixing barrel cradle supporting said mixing barrel for rotary movement, a supporting frame for mounting said cradle on a tractor, said cradle being pivotally carried by said supporting frame, means for tilting said mixing barrel from a mixing position to a dumping position, said tilting means including a first link pivotally connected to said mixing barrel cradle, a second link pivotally connected to the other end of said first link, said second link being adapted to be pivotally connected to said tractor, an actuating arm secured to said second link intermediate the ends thereof.

2. In combination with a tractor, a cement mixer attachment, said attachment comprising a rearwardly extending frame rigidly connected to said tractor, a mixing barrel cradle pivotally supported by said frame, means for tilting said mixing barrel cradle extending between said mixing barrel cradle and said tractor and actuated by hydraulic lift arms of said tractor, said frame including a pair of rearwardly extending V- shaped frame elements, each of said frame elements including pair of legs connected together at their rear ends, the forward end of one of said legs being connected to an axle housing, and the forward end of said other leg being connected to an adjacent wheel guard, said one leg sloping rearwardly and upwardly and said other leg sloping rearwardly and downwardly.

3. A concrete mixer attachment for tractors comprising a pair of spaced rearwardly extending V-shaped frame elements, each of said frame elements having legs diverging in both horizontal and vertical planes, forward ends of said legs being attached to different parts of a tractor, a cradle pivotally carried between said frame elements, a mixing barrel rotatably carried by said cradle, said barrel having a central shaft at its forward end carried by said cradle, a rear portion of said barrel being supported by a plurality of rollers carried by said cradle and engaging an outer surface of said barrel, means for selectively tilting said cradle.

4. A concrete mixer attachment for tractors comprising a pair of spaced rearwardly extending V-shaped frame elements, each of said frame elements having legs diverging in both horizontal and vertical planes, forward ends of said legs being attached to different parts of a tractor, a cradle pivotally carried between said frame elements, a mixing barrel rotatably carried by said cradle, a first link having one end pivotally connected to said cradle, a second link having one end pivotally connected to the other end of said first link, the other end of said second link being adapted to be pivotally secured to an associated tractor, an actuating arm pivotally secured to said second link intermediate its ends for selectively pivoting said links to tilt said barrel.

5. A concrete mixer attachment for tractors comprising a pair of spaced rearwardly extending V-shaped frame elements, each of said frame el ments having legs diverging in both horizontal and vertical planes, forward ends of said legs being attached to different parts of a tractor, a cradle pivotally carried between said frame elements, a mixing barrel rotatably carried by said cradle, said barrel having a central shaft at its forward end carried by said cradle, a rear portion of said barrel being supported by a plurality of rollers carried by said cradle and engaging an outer surface of said barrel, a first link having one end pivotally connected to said cradle, a second link having one end pivotally connected to the other end of said first link, the other end of said second link being adapted to be pivotally secured to an associated tractor, an actuating arm pivotally secured to said second link intermediate its ends for selectively pivoting said links to tilt said barrel.

6. A concrete mixer attachment for tractors comprising a pair of spaced rearwardly extending V-shaped frame elements, each of said frame elements having legs diverging in both horizontal and vertical planes, forward ends of said legs being attached to different parts of a tractor, a cradle pivotally carried between said frame elements, a mixing barrel rotatably carried by said cradle, said barrel having a central shaft at its forward end carried by said cradle, a rear portion of said barrel being supported by a plurality of rollers carried by said cradle and engaging an outer surface of said barrel, means for selectively tilting said cradle, said cradle being engageable with legs of said frame elements for limiting pivotal movement of said cradle.

FRED KNOWL'ION.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 1,439,178 Lund Dec. 19, 1922 1,453,634 Martin et al May 1, 1923 2,447,071 Huffman Aug. 17, 1948 2,492,895 Schulz Dec. 27, 1949 2,508,697 Tull May 23, 1950 

